This Class-12 Biology Sample Paper – 3 (Solved) covers the following portion:
Unit-X : Ecology and Environment
Chapter-13: Organisms and Populations
- Organisms and environment: Habitat and niche, population and ecological adaptations;
- Population interactions – mutualism, competition, predation, parasitism;
- Population attributes – growth, birth rate and death rate, age distribution.
Chapter-15: Biodiversity and its Conservation
- Biodiversity – Concept, patterns, importance;
- Loss of biodiversity;
- Biodiversity conservation; Hotspots, endangered organisms, extinction, Red Data Book, Sacred Groves, biosphere reserves, national parks, wildlife, sanctuaries and Ramsar sites.